Spring-motor.



G. n. KUNKLE.

SPRING MOTOR.

APPLICATION FILED JUNE 29. 1917.

Patented May 28,1918.

2 SHEETS-SHEET l.

G. R. KUNKLE.

SPRING MOTOR.

APPLICATION FILED JuNEzs. 19.11.

Panted.l May 28, 1918.

2 SHEETS-SHEET 2.

[Il l nmznfoz:

. GEORGE n. KUNKLE, or nicnmonn, INDIANA.

SPRING-MOTOR.

To all 'ibhont it concern:

Beit known that I,GERGE fIUNiiLE, a citizen ofthe United States, residing 1n the city of Richmond, in the county Aof Wayne andv State of Indiana, have invented certain new andv useful Improvements in Spring- Motors, -of which the followingis a f ull, clear, and comprehensive specification, which,

when taken-in connectionv with the accompanying drawings, forms a complete delineation of the various features thereof,

whereby a mechanic familiar with the art Amay formulate and construct an embodi-l ment of the invention with exactitude.

vBroadly stated my object is to produce a' spring motor in which the mechanlcal con- 'r-v struction is reduced to its most simple form,

consistent with the highest degree of ef-v Iiciency, whereby. it will occupy but a mini- -mum amount of space and at the same time f will affordV the maximum energy and will give the most satisfactory results in operation, and in which friction of the parts will be practically m'l.-

VA further object is to provide a spring motor'embodying the maximum of relinement. throughout its arrangement and several parts, and by which an absolute smooth i and noiseless tipjration is attained, which latter is tha/.paramount desideratum in a construction lf this character.

Other special advantages, and the particular points of refinement and arrangement `will lbe brought out in the course of this description, andthe preferred details u of construction are clearly shown the ydrawings forming a part of this specication.

The' construction which I have found to give the best results in actual practice is shown in the accompanying two-sheets of drawings, in which-Figure 1 isa central vertical section as taken through the assem- -bled motor.

plan view with certain ofthe partsremoved.

Fig. 2 'is an inslde inverted Fig. 3 is a front elevation of certaink parts of the ratchet-winding mechanism, as taken on the line 3--3 of Fig. 4. Fig. 4 is a detail elevation of the ratchet winding mechanism. Fig. 5 is a bottom plan view'of the motor. Fig. 6 is an inside or bottom plan view of the cover or lid for the case. Fig. 7 is a top plan view of the spring barrel. Fig. 8

isa side elevation of the spring barrel. Fig. 9 is an inverted plan view of a fragment of the bevelgear wheel. And-Figi() is an upper end view of the hollow shaft.

` Specification of Letters Patent.

Patented. May 28, 1918.

Like reference characters denote similar parts throughout the several views of the drawings.

In order to enable anyone to comprehend the embodiment of my invention and to more fully appreciate vthe various features thereof, I will now describe the several parts in concrete detail, and will explain certain of the advantages thereof in as comprehensive manner as possible.

In the drawings, it will be observed, I provide a case which includes the side wall l and the bottom 2, which parts are integral with each other. The case also includes the lid or cover 3, which is removably secured on the upper edge of the wall 1 by means of the four screws 4', which screws are inserted through adjoining pairs of ears extending out around the upper edge of the walll and from the periphery of the cover 3. Also similar pairs of ears extend out from the wall and from the cover 3 through which may be disposed longer screws for securing the motor in suspended position where desired, and these latter screws also contribute to securing the cover to the body and making an oil-tight joint therebetween.

The cover 3 has a central upwardly projecting hub 5 which extends up into the aperture a of the relatively stationary table or base A, which may be a part of the cabinet which contains the motor. The under face of the cover 3 is formed with a peripheral face B; an intermediate face C, whichis located inward from and concentric with the face B; and al central or hub-face D; and also a plurality of radial faces E connecting the faces Grand D, all substantially as shown in Fig. 6.v The spaces between said faces are adapted to contain grease or other lubricant, and they also add' to the strength ofthe cover yet permitting it to be comparatively light in'weight and to be formed with a minimum amount of material. All of the faces B,' C, D and E are on the same plane, and the predominant purpose of said faces will hereinafter appear.

Letter F 4 denotesv the central aperture formed through the cover and concentric of the face D, and it also extends through the `hub 5, its purpose being hereinafter explained. Also Aformed up into the center of the face D concentric o f the aperture F is the bearing socket G, and its purpose will In the center of the yconsiderable distance below the bottom 2, and in the lower end thereof is formed a comparatively large chamber H, whose lower open end is adapted to be Iclosed by the cap which latter is removably secured in' place by a pluralityof screws b.

- Extending down into the upper portion of the hub 6 is the chamber I, which is'concentric with b-ut smaller than the chamber I-I.

Numeral 8 denotes the hollow shaft, whose upper portion is reduced in diameter, and the reduced portion thereof fits in the socket G, with the shoulder thereof in contact with the face D, and the lower end of said hollow shaft fits in the socket J (Fig. 2). The socket J is of greater diameter than the chamber I, with which it is*Y concentric, thereby forming a shoulder inthe lower hub on which the lower end of the hollow shaft rests, as in Fig. 1.

Immediatelybelow the reduced portion of as indicatedat K inFig. 9. Numeral 9 denotes the large bevel gearwhich has a central square aperture therethrough which ts over the square portion K ofthe hollow shaft, and it is retained by the shoulders d I formed at the juncture of the squared portion K with the round portion of the shaft 8, in contact with the faces C, Dv and E, which prevents it from being Aforced out of alinement when force is applied to revolve it.

Numeral 10 denotes the winding shaft, which extends horizontally through the wall 1, and on its inner end is secured the small bevel gear Il which meshes, at right angles, with the large bevel gear 9.- A earin 12 is formed integral wlth the wall 1 an it extends out around the shaft 10 to form a bearing support therefor. The collar 13 is secured to the shaft 10 and it bears' against the outer end of the bearing 12 to prevent the shaft 10 from slipping inward beyond its adjusted position. A threaded socket 14 is formed in the outer end of the shaft 10 to receive a winding crank (not shown) for turning the shaft 10 in the usual manner. Numeral 15 denotes a ratchet wheel which has la hub 16 surrounding the shaft 10 and it is secured to the wheel 15 said ratchet revolving at all times with the shaft 10 and the gear 11. l Numeral' 17 denotes a dog, which -is'mounted on the pintle 18, the latter being secured inthe wall 1, as indicated in Fig. 4. The tooth of said dog is adapted to engage the teeth of the ratchet wheel, as

shown in Fig. 3. Numeral 19 denotes a thin iatcam, formed of spring metal, and it fits rotatably around the hub 16 and has an exslot e, as indicated in Fig. 3. A kink 21 is formed in the cam 19 whereby tliesaid cam is retained in sliding frictional contact with the outer face of the gear 11. From ythe above it will be observed that when the shaft 10 vis turned to the right, as in winding, that the cam 19 will be turned wlth the gear, thereby lifting the dog and by that preventing the dog from cllcklng over the ratchet wheel, yet as soon as the winding crank is released it is evident that the gear 1-1 starting to turn back will cause the cam 19 to press the dog down into engagement with the ratchet, thereby forming an abso-` lutely silent wind. 80 Extending vertically through the hollow,v shaft 8, but without contact therewith, is the .Y driven shaft 22, whose upper portion is fitted revolubly in `an aperture in the hub 5 above which it extends; andits lower end is revolubly mounted in an aperture formed through that part of the lower hublocated v between the chambers I and I-I. Said `shaft- "22 also extends through the chamber H, and its lowerI rounded end rests upon the cap 7, as shown in Fig. 1. The said shaft 22 carries on its upper end portion the revolving disk or turn-table, which is removably attached thereto, and which forms the driven. element. .Secured to thev shaft 22, immediately ybelow the hollow shaft 8, is the pinion 24, the same being located in the said chamber I. Also 'secured tothe shaft 22 is the worm pinion 25,l the latter being located in the chamber II. The shaft of the governor 26 extends through the wall of the chamber I-I into and across said chamber, and it carries a worm 27 which meshes with roo `the pinion 25, whereby the pinion 25 andthe worm 27 revolve at right angles to eachv other. The governor 26 carries the sliding disk 28 which when the Vmotor attains a pre determined speed contacts with the brake 29. I make no claim tothe particular style of governor shown', but 'merely to the fact that the gears for its operation arelocated entirely in the inclosure, thereby protecting them from dust and other outside influences and also providing for their beingauto.- matically oiled, and also eliminating lany possibility of noise emanating therefrom. v- The outer end of the governor shaft is carried by the pivot 48, and the latter isf-`carv ried by the arm 49which extends-down from the bottom 2-of the'case. 120 The spring barrel comprises the main cup portion 30 having aflat bottom and a circular vertical wall, and the top 31 which is fiat with a down turned flange whichts over the upper edge of the cup 30, and a plurality of apertures 32 are formed through the top 31 for the passage of oil or grease, and if desired similar apertures may be formed through the bottom of the cup 30.

The spring barrel thus formed is mounted revolubly around the hollow vshaft 8 which acts as its axis and with which it is concentric, but it is not attached thereto. A spring 33 is coiled around in the barrel, the outer end of which is secured to the vertivcal wall of the cup-portion- 30, and its inner end is secured to the hollow shaft 8 by means of a hook 34. y

Pressed down from the bottom of the spring barrel arev a plurality of downwardly extending circular depressions 35, and contacting' with the bases of said depressions is the large gear wheel 36, which is located around the hollow shaft and is concentric therewith, and is secured to each of said depressions by rivets, or the like 37. Said gear wheel 36 is lslightly smaller in diameter than is the diameter of the spring barrel below which it is located.

Formed in the bottom 2 are two gear pockets, 38 and 39, which overlap each other, as shown in Fig.- 5, but the latter is formed on a lower plane than is the former, each havingl a central hub as the hubs 40y and 41, respectively. Extending through said hubs are the respective axles 42 and 43,

which are detachably secured in place. Numeral 44 denotes a pinion, and 45 denotes a gear wheel concentric and integral therewith, and the are centrally mounted on the axle 42, the pinion 44 meshing with the gear 36, Numeral 46 denotes a pinion, and 47 denotes a gear wheel which is concentric and integral therewith, and they are centrally mounted on the axle 43, the pinion 46 meshing with the gear 45, and the gear 47 meshing with the pinion 24.

The bevel gear wheel 9 is provided with a plurality of apertures 50 formed through its web, as shown in Fig. 16, whereby after removingthe cover 3, or removing the oiling plug '51, lubricant may be placed on the gear 9 from which it will percolate through said apertures 50 to the mechanism therebelow.

Modus operandi.' VF rom the above it will be observed that the motorvmay be assembled as in Fig. l, after which by turning the shaft 10 to the right the gear 11 will revolve -the gear 9, and it in turn will rotate the spring arbor 8, `and as the' spring 33 is secured at its inner end te the hollow shaft it is evident that the spring will be wound tightly around the hollow sha-ft as the latter is carried around by the gear 9, and the ratchet will of course retain the spring in wound condition until it is otherwise released, as by the transmittal of power to the driven shaft.- f

Now as the outer end of the spring is secured to the spring barrel it will be seen that the expansive tendency of the spring will tend to revolved the spring barrel, which as it revolves will carry Vwith it the gear-36.

The latter will exert its power upon the pinion 44, which latter twill carry with it the previously described, and also the shaft 22 will revolve the turn-table 23 at a constant rate of speed which is determined by the governor.

In practice all, or a part, of the movable parts may be provided with fiber bearings; also the interior 0f the case may cont-ain the desired amount of oil or grease which will lubricate all of the bearings, and which can not escape from the case.

it should be observed that the shaft l0, the axles 42 and 43, are in direct alinement with each other. Also the governor mechanism is parallel with the first mentioned parts but located to the side-.of the center and on the. side opposite to that of the irst mentioned parts.

By the above it will be seen that the parts are arranged with a maximum of compactness, yet providing a very powerful and long running motor. Also practically all of the working parts, except a part of the governor, are tightly inclosed, which contributes to silent operation. Also it is evident that the oil and grease will tend to deaden any noise which might emanate figpm the metal parts. Therefore when constructed and arranged as herein-set forth l find that there is no appreciable noise or jar emana-ting from the motor either in winding or in its operatlon,

l desire that it be understood that various changes may be made in the several details of construction and arrangement, from that herein shown, without departing from the spirit of my invention and without sacrificing any of the advantages thereof. Y t

Having now fully shown and described my invention, what l claim, and desire to secure by Letters Patent of the United States, is ,y

l. A spring motor including agn inclosing case adapted to contain lubricant, a vertical hollow shaft adapted to revolve in one direction only, a spring barrel comprising la cup-like body and a top covering the bod and mounted to revolve around on said ho low shaft, a spring coiled in the barrel with its inner end attached to the hollow shaft and its outer end attached to the barrel, a gear wheel located below and secured tov said barrel, a driven shaft mounted in the casing concentric of thehollow shaft, and

spaced therefrom, a pinion secured to the 130 Y V 25 ber, a worm gear located in the lower cham- Atwo interme driven shaftl .two intermediate pinions, and diate gear wheelsfeach connected to one of said intermediate pinions and to- -gether connecting the first named gear wheel f to lthe 'first mentloned pinion, a hub extending down from the center of the case `and having a chamber formed inits lower end,

' a worm gear located in said chamber, a gov- 'ernor' operated by said worm gear, and a detachable capclosi the lower open end of said chamber, all stantially as shown and described.

case wi lower chamber being open at the bottom, a'

detachable cap closlng the open bottom of said lower chamber, a driven shaft extendvertically through the case the same be- 1ng mounted in hubs and extending through `both of said chambers with its lower end restingon said cap, a pinion secured around -said shaft and located ,in said upper chamber, a governor located outside the case, a hollow shaft located entirely within the case andhavingconnection -with said worm gear and concentric with the driven shaft with its ends located in bearings therefor in said hubs, a spring barrel located in the case and surroun\ding said hollowshaft but rotative indepemiently thereof, a' spring located insaid barrel with its inner end secured to the hollow shaft and its outer end secured to the barrel, means for revolving the hollow shaft to wind said spring, and a train of gears connecting the barrel with said pinion for driving the driven shaft at a rate of speed greater than .that ofthe spring barrel, all substantially as shown and described.

3. A spring motor substantially asv set I forth, including a case having a removable cover, a plurality of bearing surfaces located ontheinner face of thecover, an upper hub A1n the central portiony of the cover, a central hub located m the bottom of the base and having a chamber in its lower portion which opens downward, a cap for closing said chamber, a hollow shaft extending between said hubs, a spring barrel surrounding said hollow shaft and rotatable thereon, a bevel ear wheel connected to rotate with said hollow shaft and in contact with said bearing surfaces of the cover, a small gear wheel meshing 'with the first gear wheel, a winding shaft extending through the side of the case with its inner end connected to said small gear wheel, a silent ratchetl for retaining said winding shaft from movement in one direction, a spring coiled within said barrel with its inner end secured to the hollow shaft and its outer end secured to the barrel, a gear wheel carried by the barrel,

a driven shaft extendin through the hollow Y integral with the cover,'a 'iwer hub integral',

with the bottom of the case,`there being an upper and a lower chamber formed in the lower hub, the lower chamber being open at the bottom. thereof, a detachable cap for closing the lower chamber, a driven vshaft projecting through the case and bearing vapertures therefor in the upper and the lower hubs and supported by said cap, a

turn-table detachably mounted on the u per end of said shaft, a governor suspende below the case with its shaft extending intol said lower chamber, a worm gear located in the lower chamber and geared to the shaft of the governor and to said driven shaft, a

4hollow shaft concentric with the driven shaft and spaced therefrom and adapted to operate in one direction only, a large bevel gear wheel mounted on the hollow shaft a second bevel gear meshing/ at right angles with the first bevel gear, a windin shaft extending out throughv the wall of t e case from the' second bevel gear, a silent ratchet for preventing the winding shaft from beingturned in but one direction, a barrel located around the hollow shaft and operative independently thereof, said barrel comprising av cup member and a cover closing the open end of the cup member, a spring contained in said barrel with its inner end connected to the hollow shaft and its outer end connected to the barrel, a main gear wheel connected concentric of and located below said barrel and carried thereby, a pinion secured to the driven shaft and located in said upper chamber, a pair of intermediate pinions, and a pair of intermediate gear wheels meshing together and with the main gear andvwith the first mentioned pinion, and axles for said intermediate gearsv and pinions which axles are secured in the bottom of the case, there beingpockets formed in the bottom of the case for said intermediate gears, all substantially as shown and de- GEORGE R. p KUN KLE. v

Witnesses Roer. W. RANDLE, R. E. RANDLE.

Copies .of this patent may be obtained'for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. L 

